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(No Model.) 3 Sheets-Sheet 1. G. P. GRUNER.

STREET SWEEPING MAGHINE.

No. 338,225. Patented Mar 16, 1886. V

INVE OR ATTOR Es.

N. PETERS. Plmtc-Ulhcgn'pher. W-fihinglon. n. a

(No Model.) 3 Sheets-Sheet 3' O. F. GRUNER.

STREET SWEEPING MACHINE.

No. 338,225. Patented Mar. 16, 1886.

IN TOR BY ATTOR YS.

N. PETERs Phubiiihugmphcr. \Vaslfinglnn, D, C.

UNITED STATES PATENT OFFICE.

CARL F. oEiiNER, OF NEW YORK, N. Y.

STREET-SWEEPING MACHINE.

SPECIFICATION forming part of Letters Fatent No. 338,225, dated March16, 1886.

Application filed March 17, 1884. Serial No. 124,408. (No model.)

To all whom, it may concern:

Be it known that I, CARL F. GRiiNER, of the city, county, and State ofNew York, have invented certain new and useful Improvements inStreetSweeping Machines, of which the following is a specification.

This invention has reference to an improved machine for sweeping streetsand laying the dust at the same time by a proper supply of moisture; andthe invention consists of a wheelsupported box having a revolving brushat its rear end, a scoop formed of a series of pivotedand curved teethin front of said box, the end tooth having vertical flanges, a smallquicker- V revolving brush, and a small deflecting-plate above the mainbrush and scoop, and an elevator that receives the dust and dischargesthe same into a storage-receptacle of the box. At the bottom of the boxis a scoop formed of curved and pivoted teeth for collecting the tincans. At the lower front end of the same are arranged openings, whichare connected by a vertical channel with a water-reservoir above thedustreceptacle. A shorter tapering side brush is arranged at the frontpart of the machine, for sweeping the gutters, and adapted to be raisedand moved forward out of the way.

In the accompanying drawings, Figure 1 represents a' verticallongitudinal section of my improved street-sweeping machine; Fig. 1, adetail of one of the teeth of the main scoop; Fig. 2, a side elevationof the machine; Fig. 3, a front elevation of the same. Figs. 4 and 5 aredetails of the dust-conveying elevator; and Figs. 6 and 7 are a sideview and plan of the machine, showing the gutter-sweeping brush inraised position.

Similar letters of reference indicate corresponding parts.

A in the drawings representsa wheeled storage-box of suitable size, thatis drawn by horses applied to a shaft at the front end of the box. Arevolving main brush, B, at the rear end of the storage box A, lifts thedust along the scoop G, that is pivoted close to the brush B, andcomposed of a number of curved teeth, a a, which are arranged closely toeach other. The teeth or tines a a pass readily over obstructions on thestreet without interfering with the operation of the brush. The endteeth a a have flanges a at one side, that move along the side walls ofthe box'A, as shown in Fig. 2. A second brush, B, is arranged above themain brush B, and revolved in opposite direction to and at greater speedthan the main brush. The brush B takes up the dust and moves it alongthe fixed concave scoop 0, above the articulated scoop O, dropping itinto the cups of an elevator, D.

The elevator D is constructed of two endless belts, d, to which areriveted the cups d, the cups being connected by plates (1 of narrowinterlocking flexible links (1, as shown in Figs. 4 and 5, whereby thepassage of dust to the interior of the elevator is prevented, and the 1cups enabled to pass readily over the guide and drive-pulleys D D.

The elevator D conveys the dust into the storage bin or receptacle A, atthe front part of the box A, which is provided with dropdoors at thebottom, so that the contents can be removed when the receptacle isfilled.

. Above the storage box A is arranged a water-receptacle, A", whichcommunicates by a narrow vertical channel, A with small openings c, atthe lower front part of the receptacle A,whereby the water is dischargedin jets on the street, so that the same is moistened to some extent, andthe dirt taken up without creating too much dust.

Below the bottom of the storagereceptacle A is arranged a secondarticulated scoop, F, which is also made of curved teeth f, that arepivoted to the bottom of the box A, and prevented from dropping below acertain position by a transverse rod, f, applied to adjustable sidestraps, f. The teeth f extend forward and are curved upward at theirfront ends, so as to clear obstructions on the street, but strike tincans and similar light bodies, and cause them by repeatedly jostling tobe lifted and dropped back into the scoop, where they are gathered atthe rear part of the same and removed from time to time. The end teeth fare providedwith vertical flanges f, that retain the cans on the scoop.hen the sweeping operation is to be interrupted, the front wheel, I), israised by its hand-wheel and screw, whereby the front part of the box Ais lowered and the rear part, with its brush, raised above the pavement.A brush, E, with an enlarged end, is arranged at the front part of thebox and extended laterally at an angle of i11- clination to the axis ofthe machine, the side brush being designed to sweep the gutters andthrow the dirt inward into the path of the main brush B.

The spindle of the gutter-brush E is supported in bearings of alever-arm, E, that can be raised or lowered by a suitable levermechanism. \Vhen raised, the brush assumes the position shown in Fig. 6.The upper hinged section of the lever E is then swung inwardly in frontof the box A, so that the gutter-brush E is out of the way when going toor from the work, as shown in Fig. 7. A sliding bolt, E supports thelever E when the same is raised. A slide-bolt, 0, looks the hinged uppersection of the lever into line with thelower section of the same whenthe brush is lowered for use.

Any other suitable mechanism for raising the guttersweeping brush E, andthen swinging the same inward at the front part of the box A, may beused, as I do not desire to confine myself to the special constructionshown.

The brushes B, B, and E, also the elevator D, are operated bybclt-andpulley transmission from theaxle of the main wheels, as shownclearly in the drawings.

The street sweeping machine serves for sweeping the gutters and streetsand for gathering tin cans and other larger articles. The dust is storedaway in the receptacle and discharged from time to time, and then cartedaway.

The machine may also be constructed on a smaller scale, but withoutthegutter-brush and the scoop for gathering tin cans, in which it ismoved by hand, and forms a convenient machine for sweeping thefoot-walks of parks and public places.

Having thus described myinvention, Iclaim as new and desire to secure byLetters Patent- 1. The combination of a wheeled storagebox, A, arotating main brush, B, at the rear end of said box, a scoop, 0, formedof a number of curved and pivoted teeth, 00, arranged close to eachother, the end teeth having vertical flanges a, a fixed concave scoop,0, located immediately above'the pivoted scoop, a take-up brush, B, andan elevator, D, substantially as set forth.

2. In a street-sweeping machine, the combination, with a wheeledstorage-box, A, of a forward-extending curved scoop, F, hinged to thebottom of the box A, and adapted to receive tin cans, substantially asspecified.

3. The combination of a wheeled storagebox, A, with a forward-extendingscoop, F, formed of a series of curved and pivoted teeth, f, the endteeth having vertical flanges f, and a transverse supporting bar, f,guided in slotted straps f substantially as described.

4. In a street-sweeping machine, the combination, with the vehicle-body,of a stub-shaft projecting laterally therefrom, a lever pivoted at oneend to said shaft, a bolt attached to said body for supporting saidlever in elevated position, a gutter-cleaning brush the spindle of whichturns in a bearing at the outer end of said lever, the outer end of saidlever being hinged to the main body thereof, whereby the brush may beswung to the front or side of the sweeper, and a bolt for locking thetwo parts of said leverin line, substantially as described.

In testimony that I claim the foregoing as my invention I have signed myname in presence of two subscribing witnesses.

CARL F. GRljNER.

\Vi t nesses:

CARL KARP, SIDNEY MANN.

